Manager throws NullPointerException when using Togglz in Spring Boot application

Question

I'm trying to use Togglz with Spring Boot 2.7.8.

I created this test application to get it up and running:

@SpringBootApplication
public class Testproject2Application {

    @Autowired
    private static FeatureManager manager;

    public static final Feature TOGGLZ_TEST = new NamedFeature("TOGGLZ_TEST");

    public static void main(String[] args) {

        SpringApplication.run(Testproject2Application.class, args);

        if (manager.isActive(TOGGLZ_TEST)) {
            TogglzTest togglz = new TogglzTest(manager);
            togglz.getTogglzStatus();
        }
    }

}

@Configurable
public class TogglzTest {

    @Autowired
    private FeatureManager manager;

    @Autowired
    public TogglzTest(FeatureManager manager) {
        this.manager = manager;
    }

    public void getTogglzStatus(){
        System.out.println("togglzOn is working");
    }

}

My pom looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.8</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.me</groupId>
    <artifactId>testproject2</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>testproject2</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.projectreactor</groupId>
            <artifactId>reactor-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.togglz</groupId>
            <artifactId>togglz-spring-boot-starter</artifactId>
            <version>3.1.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

I set these in application.properties:

togglz.enabled=true
togglz.features.TOGGLZ_TEST.enabled=true

When I run it I get:

Exception in thread "main" java.lang.NullPointerException: Cannot invoke "org.togglz.core.manager.FeatureManager.isActive(org.togglz.core.Feature)" because "com.paulcarron.testproject2.Testproject2Application.manager" is null at com.paulcarron.testproject2.Testproject2Application.main(Testproject2Application.java:22)

I'm not sure what I should do with manager as nothing about this is mentioned in the Spring Boot Starter documentation.

What should I do to resolve this?